Bituminous cement.



Jl'tDSEPH HAY AMIES, OF PHILADELPHIA PENNSYLVANIA, ASSIGNOB TO THE AMIES ASPHALT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF' scum DAKOTA.

BITUMINOUS CEMENT.

ai. We Drawing.

To all whom it may concern:

Be it known that I, JOSEPH -H4Y AMIEs, a citizen of theUnited States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented. a certain new and useful Im rovement in Bituminous Cement, of whic the followin% is a specification. p v his invention has reference to a process of making a bituminous or like cement or binder, largely or entirely composed of flux- -ing elements.

0nly a small amount can prdinarily be used with hard asphalt, or the like when employed for paving. purposes. If a large amount of fiuxing elements are used incommon practice, the pavements will breakdown in the heat of summer, While in winter they become. so. hard as to readily granulate. Such pavements' will be slipper and dangerous in winter and dusty and unhealthy in dry weather. y My im rovement obviates these faults. I take har asphalt, or the like, and add thereto from forty to eighty five per cent. fiuxing materials, instead of the fiveto fifteen per cent. possible to be used in'ordinary practice. I then add a suificient amount of calcium oxid or calcium hydrate to take up and convert the volatile elements of the flux, and thus make a cement that will become tou h and'leathery. In this. way I ractica lly eliminate aging and make my binder or cement indifferent to changes of tempera ture, or I may dispense entirely with the hard asphalt and the like and only use the of fluxin'g elements Specification of Letters Patent. Application filed March 30, 1909., Serial No. 486,804.

Patented Mar. 8, 1910.

fluxing elements. To do this, however, I

must use about thirty pounds of calcium oxid or calcium hydrate with seventy pounds of the saidoils. If I useless, the pavement will break down in the heat of the sun and if I usemore, the oil will be lime-burned.

, A satisfactory pavement cannot be made by the ordinary practice without using as aforesaid, from eight -five to ninety-five per cent. of hard aspha t or the like.

What I'claim is:

1. The process ofimaking abinderand ce'mentfor road'andstreet surfacing and resurfacing and like uses, WhlCh consists in the employment of about from fifteen. to

sixty er cent. of solid elements, such as hard aspha t and the like and about forty to eighty-five per cent. of flllXlIl elements and mlxing the same with a sulficientamou'nt of calcium "oxid or calcium hydrate, to secure a desirable binder and cement whlch will be thirty per-cent. of calcium oxid or calcium.

hydrate, substantially as and'for the purposes set forth.

In testimony whereof I have hereunto;

signed my name.

JosEPH HAY ,AMIES. Witnesses WILLIAM J. JAcKsoIv, S. F. K0011.

indifferent to changes of temperature and 

